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Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 11.0mm), heaviest on Sun morning. Freeze-thaw conditions (max 11°C on Sat night, min 0°C on Sun night). Wind will be generally light.
Osa Weather (Days 4-6): Heavy rain (total 26.0mm), heaviest during Wed morning. Freeze-thaw conditions (max 9°C on Wed morning, min -1°C on Thu night). Winds increasing (light winds from the N on Wed night, fresh winds from the NW by Thu night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 11 |  | ||||
| Bottom Lift: | 11 | |
Latest snow reports near Osa:
Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | | | |  |  |  | | |  | | |
light rain | mod. rain | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | heavy rain | light rain | light rain | light rain | light snow | cloudy | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
4 | 7 | — | — | — | — | — | — | — | — | 14 | 5 | 4 | 2 | 1 | — | |
max °C | 11 | 6 | 6 | 3 | 3 | 4 | 1 | 9 | 9 | 7 | 9 | 9 | 7 | 6 | 4 | 1 |
min °C | 10 | 5 | 3 | 0 | 2 | 1 | 0 | 4 | 5 | 5 | 8 | 8 | 6 | 5 | 2 | -1 |
8 | 2 | -1 | -4 | -2 | -2 | -2 | 2 | 1 | 1 | 5 | 6 | 4 | 1 | -4 | -8 | |
84 | 96 | 72 | 81 | 89 | 68 | 52 | 41 | 50 | 71 | 99 | 99 | 98 | 92 | 92 | 75 | |
2800 | 2350 | 1350 | 950 | 1000 | 1050 | 1950 | 2400 | 2300 | 2600 | 2650 | 2500 | 2200 | 1450 | 1200 | 700 | |
 | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — |
 | — | — | 5:02 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — |
Moderate rain (total 11.0mm), heaviest on Sun morning. Freeze-thaw conditions (max 11°C on Sat night, min 0°C on Sun night). Wind will be generally light.
Heavy rain (total 26.0mm), heaviest during Wed morning. Freeze-thaw conditions (max 9°C on Wed morning, min -1°C on Thu night). Winds increasing (light winds from the N on Wed night, fresh winds from the NW by Thu night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.5 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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